Pub Date : 2024-06-01DOI: 10.33266/1024-6177-2024-69-3-5-12
A. Rastorgueva, T. Astrelina, V. Brunchukov, I. Kobzeva, Y. Suchkova, V. Nikitina, S. Lishchuk, E. Dubova, K.A. Pavlov, T. Malivanova, D. Usupzhanova, O.G. Mikhadarkina, A.D. Kobzev, V.I. Bulygina, A. Samoilov
Cell therapy is a promising direction in medicine, which can significantly improve the results of treatment of various diseases, including local radiation injuries (LRI). The purpose of the study was to compare the results of using decellularized human amniotic membrane isolated and together with lyophilisates of conditioned media of MSCs from the human gingival mucosa and MSCs from human placental tissue and their effect on tissue regeneration in LRI. Material and methods: The study included 42 laboratory animals (white male rats of the Wistar line), randomly divided into 6 groups: K – control group without therapy, on the 21st day after irradiation, groups using: Am+LD – application of lyophilisate of the conditioned medium of MSCs of the human gingival mucosa (LD) under the decellularized amniotic membrane, Am+LP – application of lyophilisate of the conditioned medium of MSCs of human placental tissue (LP) under the decellularized amniotic membrane, Am – application of the decellularized amniotic membrane, AmCl – application of the decellularized amniotic membrane with medical glue BF-6, Kl – application medical glue BF-6. Modeling of LRI in animals was carried out on an LNK-268 X-ray unit at a dose of 110 Gy and observed until the 112th day after irradiation, monitoring of the ulcerative surface of the skin and the course of the inflammatory process of LRI was carried out with calculation of the area of the total changed skin in the ImageTool software. Planimetric and histological analyzes were performed. Results: It was demonstrated that, when compared with the control, the use of decellularized amniotic membrane in LRI on days 77 and 112 after irradiation increased the healing rate by 4.6 and 18 times, respectively; decellularized amniotic membrane with lyophilisate of placental MSC conditioned medium increased the rate of wound healing by 13.5 and 27 times, respectively; and a dellularized amniotic membrane with lyophilisate of MSCs from the human gingival mucosa to 100 % healing. Healing of the ulcer surface area of the LRI in 83.5 % of animals in the Am group demonstrated the effectiveness of using isolated decellularized amniotic membrane even in the absence of human MSC lyophilisates. At the same time, healing of the ulcer surface area of the LRI in the AmCl group was 20 % of cases, where the decellularized amniotic membrane was fixed with BF-6 medical glue, which was less effective compared to other groups. Conclusion: The proposed combined use of decellularized amniotic membrane with lyophilisates of the conditioned medium of mesenchymal stromal cells (MSCs) of the placenta and mucous tissue of the human gums and the isolated use of decellularized amniotic membrane led to complete epithelization of the ulcer surface, a pronounced favorable course of grade IIIb–IV LRI in laboratory animals and a reduction in healing time , the absence of local or systemic complications can be considered as a promising method of conservative treatmen
{"title":"Evaluation of the Effectiveness of The Use of Decellularized Human Amniotic Membrane in Combination with Cell Therapy for Local Radiation Injuries","authors":"A. Rastorgueva, T. Astrelina, V. Brunchukov, I. Kobzeva, Y. Suchkova, V. Nikitina, S. Lishchuk, E. Dubova, K.A. Pavlov, T. Malivanova, D. Usupzhanova, O.G. Mikhadarkina, A.D. Kobzev, V.I. Bulygina, A. Samoilov","doi":"10.33266/1024-6177-2024-69-3-5-12","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-3-5-12","url":null,"abstract":"Cell therapy is a promising direction in medicine, which can significantly improve the results of treatment of various diseases, including local radiation injuries (LRI). The purpose of the study was to compare the results of using decellularized human amniotic membrane isolated and together with lyophilisates of conditioned media of MSCs from the human gingival mucosa and MSCs from human placental tissue and their effect on tissue regeneration in LRI. Material and methods: The study included 42 laboratory animals (white male rats of the Wistar line), randomly divided into 6 groups: K – control group without therapy, on the 21st day after irradiation, groups using: Am+LD – application of lyophilisate of the conditioned medium of MSCs of the human gingival mucosa (LD) under the decellularized amniotic membrane, Am+LP – application of lyophilisate of the conditioned medium of MSCs of human placental tissue (LP) under the decellularized amniotic membrane, Am – application of the decellularized amniotic membrane, AmCl – application of the decellularized amniotic membrane with medical glue BF-6, Kl – application medical glue BF-6. Modeling of LRI in animals was carried out on an LNK-268 X-ray unit at a dose of 110 Gy and observed until the 112th day after irradiation, monitoring of the ulcerative surface of the skin and the course of the inflammatory process of LRI was carried out with calculation of the area of the total changed skin in the ImageTool software. Planimetric and histological analyzes were performed. Results: It was demonstrated that, when compared with the control, the use of decellularized amniotic membrane in LRI on days 77 and 112 after irradiation increased the healing rate by 4.6 and 18 times, respectively; decellularized amniotic membrane with lyophilisate of placental MSC conditioned medium increased the rate of wound healing by 13.5 and 27 times, respectively; and a dellularized amniotic membrane with lyophilisate of MSCs from the human gingival mucosa to 100 % healing. Healing of the ulcer surface area of the LRI in 83.5 % of animals in the Am group demonstrated the effectiveness of using isolated decellularized amniotic membrane even in the absence of human MSC lyophilisates. At the same time, healing of the ulcer surface area of the LRI in the AmCl group was 20 % of cases, where the decellularized amniotic membrane was fixed with BF-6 medical glue, which was less effective compared to other groups. Conclusion: The proposed combined use of decellularized amniotic membrane with lyophilisates of the conditioned medium of mesenchymal stromal cells (MSCs) of the placenta and mucous tissue of the human gums and the isolated use of decellularized amniotic membrane led to complete epithelization of the ulcer surface, a pronounced favorable course of grade IIIb–IV LRI in laboratory animals and a reduction in healing time , the absence of local or systemic complications can be considered as a promising method of conservative treatmen","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"94 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-01DOI: 10.33266/1024-6177-2024-69-3-53-56
A. Tukov, I. Shafranskii, A. N. Koterov, M. Ziyatdinov, O. Prokhorova, A. M. Mikhaylenko
Background: Assessment of the risk of death from circulatory system diseases due to radiation exposure in liquidators of the Chernobyl accident consequences (hereinafter referred to as liquidators) using data on doses of various types of exposure. Material and methods: The work used the information base of the Industry Register of persons exposed to radiation as a result of the accident at the Chernobyl nuclear power plant (hereinafter referred to as the register), nuclear industry workers. The radiation risk assessment study included men - 12,706 liquidators who had data on external emergency radiation doses when working in the 30 km Chernobyl NPP zone, 1,327 of them had data on occupational radiation doses. Poisson regression was chosen as the statistical model of risk. The study covers the period from 1987 to 2021. During the observation period, the register accumulated 304,023 person/years. The majority of the register in 1986 was made up of men – 84.7 %, women – 15.3 %. Results: When data on doses of different types of radiation are used to calculate doses, different results of excess relative risk are obtained. Only the total radiation dose (occupational, emergency, medical, natural) can provide correct results for calculating the radiation risk of death from radiation-induced diseases. Conclusion: The prospect of research should be considered to be filling the information base of the Industry Register with data on doses of all types of radiation.
{"title":"Evaluation of the Radiation Risk of Death from Cardiovascular Diseases among the Liquidators Involved in the Cleaning up of the Consequences of the Chernobyl Accident – Workers in the Nuclear Industry Sector","authors":"A. Tukov, I. Shafranskii, A. N. Koterov, M. Ziyatdinov, O. Prokhorova, A. M. Mikhaylenko","doi":"10.33266/1024-6177-2024-69-3-53-56","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-3-53-56","url":null,"abstract":"Background: Assessment of the risk of death from circulatory system diseases due to radiation exposure in liquidators of the Chernobyl accident consequences (hereinafter referred to as liquidators) using data on doses of various types of exposure. Material and methods: The work used the information base of the Industry Register of persons exposed to radiation as a result of the accident at the Chernobyl nuclear power plant (hereinafter referred to as the register), nuclear industry workers. The radiation risk assessment study included men - 12,706 liquidators who had data on external emergency radiation doses when working in the 30 km Chernobyl NPP zone, 1,327 of them had data on occupational radiation doses. Poisson regression was chosen as the statistical model of risk. The study covers the period from 1987 to 2021. During the observation period, the register accumulated 304,023 person/years. The majority of the register in 1986 was made up of men – 84.7 %, women – 15.3 %. Results: When data on doses of different types of radiation are used to calculate doses, different results of excess relative risk are obtained. Only the total radiation dose (occupational, emergency, medical, natural) can provide correct results for calculating the radiation risk of death from radiation-induced diseases. Conclusion: The prospect of research should be considered to be filling the information base of the Industry Register with data on doses of all types of radiation.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"86 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-01DOI: 10.33266/1024-6177-2024-69-3-35-45
A.V. Rodina
The review presents current knowledge about the structure of the18 kDa translocator protein TSPO, its polymorphic variants, regulation of its gene expression and function in the cells of CNS. Particular attention is paid to its role in mitochondrial homeostasis in microglia under neuroinflammation in the long-term period after ionizing radiation exposure. Data on the effectiveness of several TSPO ligands for diagnostic imaging and treatment of neuroinflammation for restoring cognitive functions in neurodegenerative pathologies are summarized. Based on the TSPO level in the brain and in the peripheral blood cells late after irradiation, TSPO is discussed as a potential marker of neuroinflammation development.
{"title":"The Mitochondrial 18 kDa Translocator Protein as a Biomarker of Radiation-Induced Neuroinflammatory","authors":"A.V. Rodina","doi":"10.33266/1024-6177-2024-69-3-35-45","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-3-35-45","url":null,"abstract":"The review presents current knowledge about the structure of the18 kDa translocator protein TSPO, its polymorphic variants, regulation of its gene expression and function in the cells of CNS. Particular attention is paid to its role in mitochondrial homeostasis in microglia under neuroinflammation in the long-term period after ionizing radiation exposure. Data on the effectiveness of several TSPO ligands for diagnostic imaging and treatment of neuroinflammation for restoring cognitive functions in neurodegenerative pathologies are summarized. Based on the TSPO level in the brain and in the peripheral blood cells late after irradiation, TSPO is discussed as a potential marker of neuroinflammation development.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"69 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141392683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-81-82
I.B. Ushakov
In memory of our teachers and the founders of the relevant fields of radiobiology, who studied the consequences and developed protection against the combined effects of external radiation and radionuclides on the body The material included in Yuri Alexandrovich Krasovsky's monograph, designed and published posthumously, is addressed to specialists in radiobiology and medical radiology. It represents unique data that, at the time of their receipt, should be characterized as promising in terms of methodological approach, scientific novelty and meaningful author's generalization, and in modern conditions of time – as non-reproducible and relevant in solving problems of universal value. The reason for this lies in the original methodological approach of the author and his interpretation of the data obtained.
{"title":"Review of the Monograph by Yu.A. Klassovsky «The Effect of External and Internal Irradiation in the Conditions of Formation of Radioactive Traces of Nuclear Explosions. Questions of Etiology and Pathogenesis»","authors":"I.B. Ushakov","doi":"10.33266/1024-6177-2024-69-2-81-82","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-81-82","url":null,"abstract":"In memory of our teachers and the founders of the relevant fields of radiobiology, who studied the consequences and developed protection against the combined effects of external radiation and radionuclides on the body The material included in Yuri Alexandrovich Krasovsky's monograph, designed and published posthumously, is addressed to specialists in radiobiology and medical radiology. It represents unique data that, at the time of their receipt, should be characterized as promising in terms of methodological approach, scientific novelty and meaningful author's generalization, and in modern conditions of time – as non-reproducible and relevant in solving problems of universal value. The reason for this lies in the original methodological approach of the author and his interpretation of the data obtained.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"92 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140759834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-18-23
L. A. Romodin, O. Nikitenko, T. M. Bychkova, Yu. A. Zrilova, E. D. Rodionova, D. A. Bocharov
Relevance: Due to the high chemical toxicity of all known effective radioprotectors, studies of the radioprotective properties of safer drugs are very relevant. A sufficient number of works are devoted to the radioprotective properties of ribonucleoside riboxin (inosine). However, studies comparing the direct radioprotective properties of riboxin and a recognized radioprotector, for example, indralin, using a survival test in irradiated animals have not yet been carried out. Purpose: Conduct a comparative assessment of the radioprotective properties of riboxin and indralin using a survival test in mice exposed to external X-ray radiation. Material and methods: The experiment was carried out on 200 male ICR (CD-1) mice of the SPF category in duplicate. In each experiment, the animals were divided into the following groups, separated by body weight, 10 animals each: vivar control, not exposed to drugs and radiation, radiation control, with preliminary intraperitoneal administration of sterile water and exposed to external X-ray radiation in doses of 6.0, 6.5 and 6.75 Gy, experimental groups exposed to irradiation in the indicated doses with preliminary intraperitoneal administration of riboxin at a dosage of 100 ml/kg body weight or indralin at a dosage of 100 ml/kg. Survival was assessed for 30 days after irradiation. The dose change factor was determined using probit analysis as the ratio of the radiation dose causing the death of half of the irradiated animals that received the drug to the radiation dose causing the death of half of the irradiated animals without administration of the drug. Results: The use of indralin before X-ray irradiation in doses of 6.0 Gy, 6.5 Gy and 6.75 Gy led to a statistically significant increase in the survival of animals compared to the group receiving Riboxin and control irradiation (р<0,05, log-rank test). Using equations derived from Phinney probit analysis, LD50 doses were calculated for indralin and riboxin, from which dose change factors were calculated to be 1.8 and 1.07, respectively. Conclusion: Since riboxin has not demonstrated radioprotective properties, its preventive use with intraperitoneal administration under the conditions described in this paper, for leveling the effects of radiation can be considered ineffective.
{"title":"Comparison of the Radioprotective Properties of Riboxin (Inosine) and Indralin with Prophylactic Administration at Dosages of 100 mg/кg According to the Survival Criterion of Irradiated Mice","authors":"L. A. Romodin, O. Nikitenko, T. M. Bychkova, Yu. A. Zrilova, E. D. Rodionova, D. A. Bocharov","doi":"10.33266/1024-6177-2024-69-2-18-23","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-18-23","url":null,"abstract":"Relevance: Due to the high chemical toxicity of all known effective radioprotectors, studies of the radioprotective properties of safer drugs are very relevant. A sufficient number of works are devoted to the radioprotective properties of ribonucleoside riboxin (inosine). However, studies comparing the direct radioprotective properties of riboxin and a recognized radioprotector, for example, indralin, using a survival test in irradiated animals have not yet been carried out. Purpose: Conduct a comparative assessment of the radioprotective properties of riboxin and indralin using a survival test in mice exposed to external X-ray radiation. Material and methods: The experiment was carried out on 200 male ICR (CD-1) mice of the SPF category in duplicate. In each experiment, the animals were divided into the following groups, separated by body weight, 10 animals each: vivar control, not exposed to drugs and radiation, radiation control, with preliminary intraperitoneal administration of sterile water and exposed to external X-ray radiation in doses of 6.0, 6.5 and 6.75 Gy, experimental groups exposed to irradiation in the indicated doses with preliminary intraperitoneal administration of riboxin at a dosage of 100 ml/kg body weight or indralin at a dosage of 100 ml/kg. Survival was assessed for 30 days after irradiation. The dose change factor was determined using probit analysis as the ratio of the radiation dose causing the death of half of the irradiated animals that received the drug to the radiation dose causing the death of half of the irradiated animals without administration of the drug. Results: The use of indralin before X-ray irradiation in doses of 6.0 Gy, 6.5 Gy and 6.75 Gy led to a statistically significant increase in the survival of animals compared to the group receiving Riboxin and control irradiation (р<0,05, log-rank test). Using equations derived from Phinney probit analysis, LD50 doses were calculated for indralin and riboxin, from which dose change factors were calculated to be 1.8 and 1.07, respectively. Conclusion: Since riboxin has not demonstrated radioprotective properties, its preventive use with intraperitoneal administration under the conditions described in this paper, for leveling the effects of radiation can be considered ineffective.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"88 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140778237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-30-37
N. Shandala, S. Kiselev, V. Seregin, A. Filonova, D. Isaev
The article deals with and characterizes the main achievements in one of the leading areas in the activities of the SRC-FMBC – medical and health physics support of radiation safety when managing the nuclear legacy of the Russian Federation. An advanced methodology for radiation and health physics monitoring is presented, which has become a reliable guarantee of an adequate response to current challenges associated with the operation of sites for spent nuclear fuel and radioactive waste temporary storage in the Northwest Russia. Special attention is paid to topical issues of radiation and health physics survey of the coastal part of the areas inhabited by the population of the Arctic zone of the Russian Federation and the development of regulatory documents. Prospects for further development of research in order to improve radiation safety have been identified.
{"title":"Scientific and Methodological Support of Health and Epidemiological Supervision during the Remediation of Nuclear Legacy Facilities and Sites and Tasks for the Future","authors":"N. Shandala, S. Kiselev, V. Seregin, A. Filonova, D. Isaev","doi":"10.33266/1024-6177-2024-69-2-30-37","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-30-37","url":null,"abstract":"The article deals with and characterizes the main achievements in one of the leading areas in the activities of the SRC-FMBC – medical and health physics support of radiation safety when managing the nuclear legacy of the Russian Federation. An advanced methodology for radiation and health physics monitoring is presented, which has become a reliable guarantee of an adequate response to current challenges associated with the operation of sites for spent nuclear fuel and radioactive waste temporary storage in the Northwest Russia. Special attention is paid to topical issues of radiation and health physics survey of the coastal part of the areas inhabited by the population of the Arctic zone of the Russian Federation and the development of regulatory documents. Prospects for further development of research in order to improve radiation safety have been identified.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"35 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140769039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-53-64
V. Zaichick, V. Kolotov
Purpose: Medical elementology and its subsection nuclear physics medical elementology, as the most important areas of biomedical science, are still insufficiently included in the arsenal of medical radiology as a fundamental basis for the development and use of new methods for diagnosing and treating various diseases, including oncological ones. For the successful establishment of nuclear physics medical elementology as a new scientific discipline, it is necessary to develop a clear methodology for its further development. Results: The definition of the subject of research and the main postulates of medical elementology is given. The close interrelation of knowledge about the content and metabolism of chemical elements, as well as their radioactive and stable isotopes, with the needs of medical radiology is shown. The following areas of research are considered: 1) The use of chemical elements, as well as their radioactive and stable isotopes in medicine; 2) Visualization of organs and tissues, as well as in vivo determination of the content of chemical elements in them; 3) Nuclear physical methods for determining chemical elements in samples of tissues and fluids of the human body in solving oncological problems; 4) The role of chemical elements in calculating absorbed doses during radiotherapy; 5) The use of nuclear physical methods in the formation of groups at increased risk of cancer. A range of modern nuclear physics analytical methods acceptable in clinical practice and as an adequate research tool is outlined. The need for the integrated use of nuclear physics analytical technologies to obtain reference values for the content of chemical elements in various organs, tissues and fluids of the human body in normal and various pathological conditions, as well as to organize the strictest quality control of measurements and unify methodological approaches is demonstrated. The modern possibilities of using the achievements of nuclear physics medical elementology in solving the problems of medical radiology are determined and the priorities for the future are outlined. Conclusion: The steady development of nuclear physical methods of chemical elements analysis and their implementation in medicine is constantly expanding the scope of possibilities of medical elementology. The development of this area will certainly make a significant contribution to the future successes of medical radiology.
{"title":"Nuclear Physics Medical Elementology as a Section of Medical Radiology","authors":"V. Zaichick, V. Kolotov","doi":"10.33266/1024-6177-2024-69-2-53-64","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-53-64","url":null,"abstract":"Purpose: Medical elementology and its subsection nuclear physics medical elementology, as the most important areas of biomedical science, are still insufficiently included in the arsenal of medical radiology as a fundamental basis for the development and use of new methods for diagnosing and treating various diseases, including oncological ones. For the successful establishment of nuclear physics medical elementology as a new scientific discipline, it is necessary to develop a clear methodology for its further development. Results: The definition of the subject of research and the main postulates of medical elementology is given. The close interrelation of knowledge about the content and metabolism of chemical elements, as well as their radioactive and stable isotopes, with the needs of medical radiology is shown. The following areas of research are considered: 1) The use of chemical elements, as well as their radioactive and stable isotopes in medicine; 2) Visualization of organs and tissues, as well as in vivo determination of the content of chemical elements in them; 3) Nuclear physical methods for determining chemical elements in samples of tissues and fluids of the human body in solving oncological problems; 4) The role of chemical elements in calculating absorbed doses during radiotherapy; 5) The use of nuclear physical methods in the formation of groups at increased risk of cancer. A range of modern nuclear physics analytical methods acceptable in clinical practice and as an adequate research tool is outlined. The need for the integrated use of nuclear physics analytical technologies to obtain reference values for the content of chemical elements in various organs, tissues and fluids of the human body in normal and various pathological conditions, as well as to organize the strictest quality control of measurements and unify methodological approaches is demonstrated. The modern possibilities of using the achievements of nuclear physics medical elementology in solving the problems of medical radiology are determined and the priorities for the future are outlined. Conclusion: The steady development of nuclear physical methods of chemical elements analysis and their implementation in medicine is constantly expanding the scope of possibilities of medical elementology. The development of this area will certainly make a significant contribution to the future successes of medical radiology.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"163 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-38-48
A. N. Koterov, L. Ushenkova, A. A. Wainson, I. G. Dibirgadzhiev, M. Kalinina, A.Yu. Bushmanov
Based on the maintained database (source database) on effects in nuclear workers (NW), a selection of major studies of the relationship between mortality from diseases of the circulatory system (CVD; codes 390–459 according to ICD-9 and I00–I99 according to ICD-10) and external radiation dose. The sample included 30 papers and covered cohorts from 6 countries plus an NW cohort from 15 countries. For the sample, in most cases based on published standardized mortality rates (SMR), the relative risks (RR) of mortality from CVD were calculated for the selected dose groups with subsequent processing of the material for outliers. Initial: n = 207; final sample: n = 199; covers very low (0–10 mSv; 15.8 % of the sample), low (>10–100 mSv; 45.8 %) and moderate (>100–1000 mSv; 36.4 %) doses; data for high doses (>1000 mSv; n = 4; 2 % of the sample), due to dubiousness, were excluded. A systematic review and pooled analysis of the RR for mortality from CVD depending on the dose on an ordinal scale was performed on the final sample. For the entire dose range (0–1000 mSv) and for moderate doses, statistically significant trends in increasing RR were found when expressed in five types of regressions (except for the logarithmic one for the entire range). Although the r values were small (0.230–0.293), the effect was clear. The ERR per 1 Gy (Sv) calculated for moderate doses using linear regression was 0.54. This value is higher than those obtained previously in meta-analyses, but should be considered as the most adequate. No dose relationship was found for the very low + low dose range (0–100 mGy); the r coefficients for the regressions were either negligible or negative at statistical insignificance. For the subthreshold dose range for CVD mortality after exposure (according to UNSCEAR and ICRP: 500 mSv), only a weak trend towards an increase in RR was found, statistically insignificant, despite the large sample size (n = 191), while for the dose range 500–1000 mSv, the highest tendency among the pooled analyzes was revealed to increase the risk depending on the level of exposure (r = 0.297–0.423; statistically insignificant due to the small sample size: n = 8). It is concluded that for mortality from CVD after irradiation, the threshold value of 0.5 Gy established by UNSCEAR and ICRP and confirmed in the present pooled analysis should be strictly adhered to. Due to the lack of effects of low doses, it is inappropriate to raise the issue of low dose effects in the context of these pathologies.
{"title":"Dose Dependence for Mortality from Circulatory Diseases in Nuclear Workers (Systematic Review and Pooled Analysis): Lack of Low Doses Effect and Confirmation of Unscear and Icrp Threshold at 0.5 Gy","authors":"A. N. Koterov, L. Ushenkova, A. A. Wainson, I. G. Dibirgadzhiev, M. Kalinina, A.Yu. Bushmanov","doi":"10.33266/1024-6177-2024-69-2-38-48","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-38-48","url":null,"abstract":"Based on the maintained database (source database) on effects in nuclear workers (NW), a selection of major studies of the relationship between mortality from diseases of the circulatory system (CVD; codes 390–459 according to ICD-9 and I00–I99 according to ICD-10) and external radiation dose. The sample included 30 papers and covered cohorts from 6 countries plus an NW cohort from 15 countries. For the sample, in most cases based on published standardized mortality rates (SMR), the relative risks (RR) of mortality from CVD were calculated for the selected dose groups with subsequent processing of the material for outliers. Initial: n = 207; final sample: n = 199; covers very low (0–10 mSv; 15.8 % of the sample), low (>10–100 mSv; 45.8 %) and moderate (>100–1000 mSv; 36.4 %) doses; data for high doses (>1000 mSv; n = 4; 2 % of the sample), due to dubiousness, were excluded. A systematic review and pooled analysis of the RR for mortality from CVD depending on the dose on an ordinal scale was performed on the final sample. For the entire dose range (0–1000 mSv) and for moderate doses, statistically significant trends in increasing RR were found when expressed in five types of regressions (except for the logarithmic one for the entire range). Although the r values were small (0.230–0.293), the effect was clear. The ERR per 1 Gy (Sv) calculated for moderate doses using linear regression was 0.54. This value is higher than those obtained previously in meta-analyses, but should be considered as the most adequate. No dose relationship was found for the very low + low dose range (0–100 mGy); the r coefficients for the regressions were either negligible or negative at statistical insignificance. For the subthreshold dose range for CVD mortality after exposure (according to UNSCEAR and ICRP: 500 mSv), only a weak trend towards an increase in RR was found, statistically insignificant, despite the large sample size (n = 191), while for the dose range 500–1000 mSv, the highest tendency among the pooled analyzes was revealed to increase the risk depending on the level of exposure (r = 0.297–0.423; statistically insignificant due to the small sample size: n = 8). It is concluded that for mortality from CVD after irradiation, the threshold value of 0.5 Gy established by UNSCEAR and ICRP and confirmed in the present pooled analysis should be strictly adhered to. Due to the lack of effects of low doses, it is inappropriate to raise the issue of low dose effects in the context of these pathologies.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"223 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140793770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Radiotherapy remains one of the main methods of cancer treatment. At the same time, the formation of radioresistance (RR)of cancer cells to ionizing radiation leads to a loss of therapy effectiveness. The toxicity of radiotherapy is determined by mitochondria, and the use of mitochondria or their components in combination with chemo-radio and immunotherapy can increase the effectiveness of treatment. In this review, we have reviewed new, experimental methods for using mitochondria in cancer therapy. Literature data indicate that although the physiological transport of mitochondria promotes carcinogenesis and resistance to chemotherapy, transplantation of exogenous mitochondria, on the contrary, induces radiosensitivity and inhibits tumor growth in mouse models of cancer. Therefore, inhibition of endogenous transfer of cancer mitochondria or the development of methods for the delivery of exogenous mitochondria is a promising area for the development of anti-cancer drugs.
{"title":"Mechanisms of Mitochondrial Influence on Tumor Radioresistivity","authors":"J.M. Rozenberg, V.V. Maximov, D.V. Kuzmin, S.V. Leonov","doi":"10.33266/1024-6177-2024-69-2-12-17","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-12-17","url":null,"abstract":"Radiotherapy remains one of the main methods of cancer treatment. At the same time, the formation of radioresistance (RR)of cancer cells to ionizing radiation leads to a loss of therapy effectiveness. The toxicity of radiotherapy is determined by mitochondria, and the use of mitochondria or their components in combination with chemo-radio and immunotherapy can increase the effectiveness of treatment. In this review, we have reviewed new, experimental methods for using mitochondria in cancer therapy. Literature data indicate that although the physiological transport of mitochondria promotes carcinogenesis and resistance to chemotherapy, transplantation of exogenous mitochondria, on the contrary, induces radiosensitivity and inhibits tumor growth in mouse models of cancer. Therefore, inhibition of endogenous transfer of cancer mitochondria or the development of methods for the delivery of exogenous mitochondria is a promising area for the development of anti-cancer drugs.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"40 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140759509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.33266/1024-6177-2024-69-2-5-11
T. Gaynutdinov, K. Vagin, S.A. Ryzhkin, F.H. Kalimullin, S.E. Ohrimenko
Purpose: Simulate radiation-pasteurellosis lesions in the body. Material and methods: Modeling of radiation and pasteurellosis lesions caused by the action of physical and biological factors on the organism Modeling of acute radiation disease (ARD) of animals was carried out by gamma-irradiation at the “Puma” facility with an exposure dose rate of 2.36×10-5 A/kg. Pasteurella multocida, the causative agent of pasteurellosis, as one of the most frequently occurring pathogenic agents, was used as a model biological agent to reproduce the experimental biological lesion. Modeling of radiation-pasteurellosis lesion was carried out on rabbits and on white mice with live weight of 2.8‒3.4 kg and 18‒20 g, respectively. Results: In experiments on white mice to determine the optimal doses of the affecting agents it was found that the minimum doses of gamma rays and the causative agent of pasteurellosis are 6.0 Gy and 4.5×103 microbial cells per kg (m.k./kg), 3.9 Gy and 9.0×103 m.k./kg, which leads to the development of pasteurellosis infection and radiation sickness in acute form with death of all animals, mainly on the first and second days after exposure to the affecting agents. k./kg, which leads to the development of pasteurellosis infection and radiation disease in acute form with death of all animals, mainly on the first and second days after combined exposure to the affecting agents. It was found that gamma-irradiation of rabbits at a dose of 8.0 Gy, followed by infection with Pasteurella at a dose of 4.5×103 m.k./kg, aggravated the course of the pasteurellosis process, contributed to its generalization and accelerated the death of animals. Conclusion: Radiation-pasteurellosis affection proceeded rapidly. Animals died on 2‒13 days after the onset of the disease with an average life expectancy of 6.3 days. Exposure of rabbits to non-lethal doses of the studied agents at the indicated doses led to aggravation of the course of radiation sickness and pasteurellosis infection, causing death of all animals from radiation-pasteurellosis pathology. At autopsy of corpses of animals, which died from acute course of radiation-pasteurellosis pathology, swelling of subcutaneous tissue in the area of pharynx and intermandibular space of neck, hyperemia and enlargement of lymph nodes, numerous hemorrhages on serous and mucous membranes and in tissues of parenchymatous organs ‒ serous or serous-fibrinous exudate in thoracic and abdominal areas, pulmonary edema were found.
{"title":"Modeling of Radiation Damage on the Background of Pasteurellosis Infection of the Organism","authors":"T. Gaynutdinov, K. Vagin, S.A. Ryzhkin, F.H. Kalimullin, S.E. Ohrimenko","doi":"10.33266/1024-6177-2024-69-2-5-11","DOIUrl":"https://doi.org/10.33266/1024-6177-2024-69-2-5-11","url":null,"abstract":"Purpose: Simulate radiation-pasteurellosis lesions in the body. Material and methods: Modeling of radiation and pasteurellosis lesions caused by the action of physical and biological factors on the organism Modeling of acute radiation disease (ARD) of animals was carried out by gamma-irradiation at the “Puma” facility with an exposure dose rate of 2.36×10-5 A/kg. Pasteurella multocida, the causative agent of pasteurellosis, as one of the most frequently occurring pathogenic agents, was used as a model biological agent to reproduce the experimental biological lesion. Modeling of radiation-pasteurellosis lesion was carried out on rabbits and on white mice with live weight of 2.8‒3.4 kg and 18‒20 g, respectively. Results: In experiments on white mice to determine the optimal doses of the affecting agents it was found that the minimum doses of gamma rays and the causative agent of pasteurellosis are 6.0 Gy and 4.5×103 microbial cells per kg (m.k./kg), 3.9 Gy and 9.0×103 m.k./kg, which leads to the development of pasteurellosis infection and radiation sickness in acute form with death of all animals, mainly on the first and second days after exposure to the affecting agents. k./kg, which leads to the development of pasteurellosis infection and radiation disease in acute form with death of all animals, mainly on the first and second days after combined exposure to the affecting agents. It was found that gamma-irradiation of rabbits at a dose of 8.0 Gy, followed by infection with Pasteurella at a dose of 4.5×103 m.k./kg, aggravated the course of the pasteurellosis process, contributed to its generalization and accelerated the death of animals. Conclusion: Radiation-pasteurellosis affection proceeded rapidly. Animals died on 2‒13 days after the onset of the disease with an average life expectancy of 6.3 days. Exposure of rabbits to non-lethal doses of the studied agents at the indicated doses led to aggravation of the course of radiation sickness and pasteurellosis infection, causing death of all animals from radiation-pasteurellosis pathology. At autopsy of corpses of animals, which died from acute course of radiation-pasteurellosis pathology, swelling of subcutaneous tissue in the area of pharynx and intermandibular space of neck, hyperemia and enlargement of lymph nodes, numerous hemorrhages on serous and mucous membranes and in tissues of parenchymatous organs ‒ serous or serous-fibrinous exudate in thoracic and abdominal areas, pulmonary edema were found.","PeriodicalId":37358,"journal":{"name":"Medical Radiology and Radiation Safety","volume":"43 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140796446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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